Topcon DT205L Digital Theodolite

• Length    152 mm
• Objective lens    45 mm
• Magnification    30x power
• Field of view    1°30′
• Resolving power    2.5 power
• Minimum focus    1m cm
• Stadia ratio    100
• Stadia constant    0
• Sighting collimator    Double

Electronic Angle Measurement 

• Method    Absolute Reading
• Detecting    2 horizontal sides, 1 vertical sides
• Minimum reading    1″/5″ arc seconds, 0.2mgon/1mgon mgon
• Accuracy    5 arc seconds, 71mm Diameter Circle

Laser Pointer

• Method    Focusing
• Wave length/Power    633nm/0.6mW

Display  

• Display sides    2
• LCD    7 segments

Data Output 

• Serial signal connector    RS-232C

Compensator

• Tilt sensor    Vertical
• Compensating range    ±3 ft
• Optical Plummet Telescope
• Magnification    3x power
• Field of view    3° degrees

Level Sensitivity  

• Plate level    40°/2mm
• Circular level    10°/2mm

Water Protection

• Standard    IP66 rating

Power Supply   

• Battery    4AA batteries

Operating time Alk.    

• Theodolite only    140 Hours
• Laser only    80 Hours
• Theodolite and laser    45 Hours

Environmental  

• Operating Temp    -20 to +50 degrees C